i use ssdt provided by slice..
Try Inject Ati in clover boot menu.
Did you check the 8000controolerkext for similar IDs? Or was 0x68101002 only in the 7000controllerkext?
Try clover boot manager screen set Framebuffer. Hamachi, Futomaki, OPM, try these separately, or one at a time.
Also, try Uningine Valley to see if you have acceleration and see what is says after a benchmark.
Finally my 290X works OOB on OSX.
I changed my smbios profile from 15.1 to 14.2, put lilu and whatevergreen in the kexts folder and most importantly, in the bios I said that the main video card is the 290X, the integrated one I have disabled.
With the 15.1 Symbios it wouldn’t work? I’ve been reading about some Nvidia users switching to 15.1 to get functionality with web drivers latley. Interesting!